The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 1985
Filed:
Apr. 07, 1983
Applicant:
Inventors:
Carl T Richmond, Scottsdale, AZ (US);
Thomas A Butler, Scottsdale, AZ (US);
Joseph E Andrews, Jr, San Jose, CA (US);
Assignee:
Motorola, Inc., Scahumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
328140 ; 328136 ; 307519 ; 307520 ; 307522 ; 307540 ; 307552 ; 307553 ; 307261 ; 333126 ; 333129 ; 333132 ; 333134 ; 329110 ; 329168 ; 329170 ;
Abstract
Signals to be discriminated are supplied through a controllable attenuator and power splitter to first and second discriminators with response slopes which are equal and of opposite sign. The outputs of the discriminators are summed and a reference signal is subtracted from the sum to produce a control signal which adjusts the input attenuator to maintain the amplitude of the input signal constant. The outputs of the discriminators are also subtracted to provide an output signal which is a linear function of frequency and independent of input amplitude.